KING

new and delete

• the way it allocate and release memory
  • the memory is allocate from Free Store
  • will return a fully typed pointer
    • if failed will not return NULL
  • the compiler will calculate the size
  • reallocate is not handled intuitively, using copy constructor
  • whether called malloc and delete can be user defined
  • can add a new memory allocator to deal with low memory
  • new and delete can be overwrite legally
  • use constructor/destructor to initial/destory object

data processing is very important before data mining

• like if you are going to do some data mining in the linkedin public profile
• 1.find out the number of the people that have

   - education
   - experience
   - skills
   - have all
  

• 2.find out all the skills and list the number of user who own them in a diagram
• 3.find out all the company number
• 4.find out all the people that is in US
• 5.find out all the education level of all people

   - like undergraduate, graduate, phd
  

• 6.find out all the experience about job numbers

   - like 1 job, 2 jobs, 3 jobs
  

In the iupui mason server

• there are 20 server, each have 10 gigabit ethernet
• 4 cpu in each server
  • 8 core processor each cpu
  • total 32 core in each server
• in the /scratch or /tmp there are total 400 GB disk storage
  • and the file will be delete after 14 days since they are created

dependent of scrapy

• remember that the scrapt need python2.7 to run
• and there will be lots of package need to be installed

What to do when need to install python package on the server without root access

• today I went through a problem that I want to have the python package installed on the high performance server but without the root access
• and what I need to do is to install the python 2.7.3 first and then install all the package that scrapy need and finaly get scrapy run

The hackathron take 24 hours to write an app that can be used for attracting people to indianapolis

• and I first design a python version of app
• then I use bootstrap theme to develop a mobile compatible web app with php link to the mysql database.

database ER diagram

• 
• some change in the database relationship
• 
• we have
  • T_ADMIN
  • T_USER
  • T_USER_CLASS
  • T_PROJECT
  • T_PRO_LEVEL
  • T_PROJECT_STATISTICS
  • T_TASK
  • T_SUBTASK
  • T_MATERIAL
  • T_CUSTOMER